Welt-guide for sewing-machines



(Model.)

L. MUTHER. WELT GUIDE FOR SEWING MACHINES.

No. 427,352. Patented May 6,1890.

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LORENZ MUTHER, OF OAK PARK, ASSIGNOR TO THE UNION SPECIAL SEWING MACHINECOMPANY, OF CHICAGO, ILLINOIS.

WELT-GUIDE FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 427,352, dated May 6,1890.

Application filed February 25, 1.889. Serial No. 301,079. (Model.)

T all whom, it ntay concern:

Be it known that I, LORENZ MUTHER, a citizen of theUnited States,residing in Oak Park,

in the county ot' Cook and State of Illinois,

have invented a new and useful Improvement in Machines for Sewing VeltedScams, of which the following is a specification.

In sewing welts into the seams of shoes it is desirable that the weltshould be lett out [o of those portions of the seam lwhich in thesubsequent manipulation must be folded into otherseams running across orat right angles to the welted seam.

The object of my invention is to produce a welt-sewingmachine, in theuse of which the operator may at the proper time withdraw the welt fromthe line of sewing and from between the edges of the pieces being sewed,so that the machine may be kept in motion notzo withstanding suchwithdrawal of the welt, and the seam be proceeded with and finishedprecisely as though no welt had been introduced into any part of it; andin carrying out this obj ect I make the guide for the welt movablelaterally with regard to the line of the seam and provide it with alever or equivalent convenient means, whereby it may he thus moved whenthe sewing has reached the point where the welt should be withdrawn.

The invention consists ina guide for the welt and a spring-controlledplate for carrying said guide, and which is movable laterally away fromthe seam and is provided with a lever for its convenient operation.

3 5 In the accompanying drawings, which form a part of thisspecification, and in which similar letters of reference indicate likeparts, Figure l is a perspective of the bed-plate of a sewing-machinewith my welting attach- 4o ment in place thereon. Fig. 2 is a plan viewot" the attachment. Fig. 3 is a section upon the line 3 3 of Fig. 2.Fig. 4 is asection upon the-line 4 4 of Fig. 2, showing the twothicknesses of leather being joined, with the welt 45 in positionbetween them ready to be sewed into the seam. Fig. 5 is a sectionsimilar .to Fig. 4, showing the welt withdrawn from between the leatherand the position to which it may he moved by the movable guide of my 5oinvention; and Fig. 6 shows the thicknesses of leather and the welt inthe position they occupy at the instant of sewing them together.

In said drawings, A represents the bed-plate of the sewing-machine, athe presser-foot, and a the aperture in the latter for the passage otthe needle.

B is a plate adapted to be slid under the holding-ledges of thebed-plate A in position for operation, and b is a set-screw for fastenning the plate after it has been positioned. 6o

' Secured to this plate B is a block of metal C,

in which is formed a slideway c.

D is a slide working in said slidewayc and carrying at its outer end aplate E and a looped or doubled strip e, the latter being con- 6 5veniently secured to the slide by the screw c. The outer edge of theplate E acts as the tongue of the guide and the strip c acts to confineor hold the welt upon such tongue. I also mount upon said plate Eanotherdoubled 7o piece of metal F, through which the welt is passed inlike manner as through the strip e. This last-mentioned strip F acts inconjunction with the rider-piece f, also mounted on the plate E, tostraighten the welt in case it should be twisted as it approaches theneedle. The guide thus described would act in the ordinary manner ifstationary; but by securing it to t-he side and providing the latterwith a suitable operating device-such as a lever 8o G, pivoted to theblock C and connected to the slide by the pin g, working in theelongated slot 7?, of the lever-the operator is enabled, when the properpoint in the seam has been reached, to quickly move the guide laterally,thereby bringing the welt to the position shown at Fig. 5, and allowingthe completion of the seam without stopping the machine and withoutsevering the welt at the time or removing it from the machine. The leveror 9o other slide-operating deviceshould have limits placed upon itsmotion, so that it may not carry the welt too far within the seam uponthe one hand nor too far away from it upon the other, and hence Iprovide stops consisting of 'a plate H at one side of the lever and asetscrew 'i at the other side.

I have shown the invention in the form of a removable attachment to beapplied to existing machines; but it of course may be made :oo

a permanent part of the machine. The spring m acts against the fartherend of the slide to keep the guide up to its work, and also returns ittothe operating position after it has been moved therefrom, and theloop-guide F may also be accompanied by an adjustable reversed loop j,the ends whereof are within the loop F and act as guides to the edges ofthe Welt.

In the practical operation of the invention, where large quantities ofshoes are being made, a continuous welt ruiming through the seams of aseries of shoes may be used, and only be severed subsequent to thesewing of the series. AMy improved guide permits this to be done, as itcarries the welt back into the seam as readily as it withdraws ittherefrom.

I claiml. The welting attachment for sewing-machines, comprising asliding spring-controlled guide-carryin g plate movable laterally towardand away from the line of stitching, a guide thereon, and a lever forimparting lateral movement to said plate against the action of thespring, substantially as described.

2. In combination with a suitable baseplate, a block supported thereby,a welt-guide movable on said block, a lever pivoted to the block at oneend and secured to said guide, and a spring for keeping said guidenormally pressed forward, substantially as described.

3. In combination with a suitable baseplate, a block supported thereby,a Welt-guide movable on said block, a lever pivoted at one end to theblock and secured to said guide, stops secured to said block forlimiting the movement of said lever, and a spring for keeping thewelt-guide normally pressed forward, substantially as described.

4. In combination with the bed-plate of a sewing-machine, a plate B,secured thereto, a metallic block attached to said plate B, a welt-guidemovable on said block, a lever pivoted at one end to said block andprovided with a longitudinal slot, a pin passing through said slot intothe guide, stops for limiting the movement of said lever, and a springfor keeping the guide normally pressed forward, substantially asdescribed.

LORENZ MUTIIER.

\Vitn esses:

H. M. MUNDAY, EDw. S. EvAnTs.

